//套接字
#pragma once

#include<iostream>
#include<string>
#include<functional>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<cstring>
#include<pthread.h>
#include<sys/types.h>
#include<memory>
#include"InetAddr.hpp"
#include"Log.hpp"

namespace socket_ns
{
    class Socket;
    const static int gbacklog = 8;
    using socket_sptr = std::shared_ptr<Socket>;
    enum
    {
        SOCK_ERROT=1,
        BIND_ERROR,
        LISTEN_ERROR,
        USAGE_ERROR
    };
    class Socket
    {
       public:
       virtual void CreateSocketOrDie() = 0;//套接字
       virtual void BindSocketOrDie(InetAddr &addr) = 0;//绑定
       virtual void ListenSocketOrDie() = 0;//监听
       virtual socket_sptr Accpter(InetAddr *addr) = 0;//接收方
       virtual bool Connetcor(InetAddr &addr) = 0;
       virtual int SockFd() = 0;
       virtual int Recv(std::string *out) = 0;//接收
       virtual int Send(const std::string &in) = 0;//发送
    
       public:
       void BuildListenSocket(InetAddr &addr)
       {
            CreateSocketOrDie();
            BindSocketOrDie(addr);
            ListenSocketOrDie();
       }
       bool BuildClientSocket(InetAddr &addr)
       {
        CreateSocketOrDie();
        return Connetcor(addr);
       }

    };
    class TcpSocket : public Socket
    {
        public:
        TcpSocket(int fd = -1)
        :_sockfd(fd)
        {}
        void CreateSocketOrDie()override
        {
            //创建流式套接字
            _sockfd = ::socket(AF_INET,SOCK_STREAM,0);
            if(_sockfd<0)
            {
                LOG(FATAl,"socket error");
                exit(SOCK_ERROT);
            }
            LOG(DEBUG,"socket cerate success socket: %d\n",_sockfd);
        }
        void BindSocketOrDie(InetAddr &addr)override
        {
            //绑定
            struct sockaddr_in local;
            memset(&local,0,sizeof(local));
            local.sin_family = AF_INET;
            local.sin_port = htons(addr.Port());
            local.sin_addr.s_addr = inet_addr(addr.Ip().c_str());
            int n = ::bind(_sockfd,(struct sockaddr*)&local,sizeof(local));
            if(n<0)
            {
                LOG(FATAl,"bind error");
                exit(BIND_ERROR);
            }
            LOG(DEBUG,"bind success,sockfd is : %d\n",_sockfd);
        }
        void ListenSocketOrDie()override
        {
            int n = ::listen(_sockfd,gbacklog);
            if(n<0)
            {
                LOG(FATAl,"listen error");
                exit(LISTEN_ERROR);
            }
            LOG(DEBUG,"listen success sockfd is :%d\n",_sockfd);
        }
        socket_sptr Accpter(InetAddr *addr)override
        {
            struct sockaddr_in peer;
            socklen_t len = sizeof(peer);
            int sockfd = ::accept(_sockfd,(struct sockaddr*)&peer,&len);
            if(sockfd<0)
            {
                LOG(WARNING,"accept error\n");
                return nullptr;
            }
            *addr = peer;
            socket_sptr sock = std::make_shared<TcpSocket>(sockfd);
            return sock;
        }

      virtual bool Connetcor(InetAddr &addr) 
        {
            //绑定客户端
            struct sockaddr_in server;
            memset(&server,0,sizeof(server));
            server.sin_family = AF_INET;
            server.sin_port = htons(addr.Port());
            server.sin_addr.s_addr = inet_addr(addr.Ip().c_str());
            int n = connect(_sockfd,(struct sockaddr*)&server,sizeof(server));
            if(n<0)
            {
                std::cerr<<"connect errto"<<std::endl;
                return false;
            }
            return true;
        }
        int Recv(std::string *out) override//接收
        {
            char inbuffer[1024];
            ssize_t n = ::recv(_sockfd,inbuffer,sizeof(inbuffer)-1,0);
            if(n>0)
            {
                inbuffer[n] = 0;
                *out +=inbuffer;
            }
            return n;
        }
        int Send(const std::string &in) override//发送
        {
            int n = ::send(_sockfd,in.c_str(),in.size(),0);
            return n;
        }
        int SockFd() override
        {
            return _sockfd;
        }
        private:
        int _sockfd;
    };
}